APA (7th ed.) Citation

Walpole, H. (2004). The Letters of Horace Walpole, Earl of Orford - Volume 4. Project Gutenberg.

Chicago Style (17th ed.) Citation

Walpole, Horace. The Letters of Horace Walpole, Earl of Orford - Volume 4. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Walpole, Horace. The Letters of Horace Walpole, Earl of Orford - Volume 4. Project Gutenberg, 2004.

Warning: These citations may not always be 100% accurate.